Small exchange stored program switching system



Deg. 3o, 1969 R, Bumm ET AL 3,487,173

SMALL EXCHANGE STARED PROGRAM SWITCHING SYSTEM Filed July 15, 1966 29 Sheets-Sheet v1 INVENTOR. ROBERT W. DUTHIE ROBERT M. THOMAS ATTY.

Dec. 3o, v1969 R. w. Du'rHlE ET AL 29 Sheets-Sheet 2 SMALL EXCHANGE sTARED PROGRAM swITcHING SYSTEM Filed July 15. 1966 Dec. 30, 1969 R. w. DuTHlE 'ET Al. 3,487,173

SMALL EXCHANGE STARED PROGRAM SWITCHING SYSTEM Filed July l5. 1966 29 Sheets-Sheet 5 Dec. 30, 1969 R w. DUTHlE ET AL 3,487,173

SMALL EXCHANGE STARED PROGRAM SWITCHING SYSTEM Filed July 15, 1966 29 Sheets-Sheet 4.

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SMALL EXCHANGE STARED PROGRAM SWITCHING SYSTEM Filed July l5, 1966 29 Sheets-Sheet 5 AAAAA VVVVV Dec. 30, 1969 R. w. DUTHIE ET AL 3,487,173

SMALL ExcHANGE STARED PROGRAM swITcHIMG SYSTEM Filed July 15, 1966 29 Sheets-Sheet 6 @EEES .Eo .Se :Em 5 "S2 MEE zo@ 3. .l T T B Now .I .M mow B mono ao Dec. 30, 1969 R. W. DUTHIE ET Al. 3,487,173

SMALL EXCHANGE STARED PROGRAM SWITCHTNG SYSTEM Filed July 15, 1966 29 Sheets-Sheet 7 Dec. 30, 1969 R, w Dun-11E ET AL 3,487,173

SMALL EXCHANGE STARED PROGRAM SWITCHING SYSTEM Filed July 15', 196e 29 sheets-sheet s Dec. 30, 1969 R. w. DuTHn-z ET Al. 3,487,173

SMALL EXCHANGE STARED PROGRAM SWITCHING SYSTEM Filed July 15, 1966 29 Sheets-Sheet 9 oww WE1 ME. @N @Vlu HHN: WEHMZN H luuuwl I, x x l|||ll|%lx 0 ..||I....|||| EE El .llll

Dec. 30, 1969 R, w.-DUTH|E ET AL 3,487,173

SMALL EXCHANGE STARED PROGRAM SWITCHING SYSTEM Filed July .15, 1966 29 vSheets-Sheet 10 @Si /f f f @bum mmrwo mom n...

30,1969 v v `R. w. DUTHIE ET AL 3,487,173

SMALL EXCHANGE STARED PROGRAM SWITCHING SYSTEM Filed July 15, 196e 29 snees-sheet 11 UNE GATE Bl LINE GATE D3 De.3o,1969 RWDUTHIE ETAT. 3,487,173

SMALL EXCHANGE STARED PROGRAM SWITCHING SYSTEM Filed July 15, 1966 29 Sheets-Sheet 12 0i o 3 1 r o' u1 u.; lz "Bu MATRIX #l TJ- TJ-BIBG TJB 6 Bil MATRIX RJ-o3a4 TJ-oas #2 VIA RJ'S( I TO TU l GROUND 39 l I ALLOTTERS i I i I I Bil MATRIX #la MATRIX #I4 GROUND FIG. l2

Dec. 30, 1969 R, w, Dun-HE ET AL 3,487,173

SMALL EXCHANGE STARED PROGRAM swITcHING SYSTEM Filed July 15, 196e 2,9 Sheets-Shea?l 13 Dec. 30, 1969 R, w, DUTHIE ET AL 3,487,173

SMALL EXCHANGE STARED PROGRAM SWITCHING SYSTEM Filed July 15, 196e 29 sheets-sheet 14" Deivso, 1969 R. w. DUTHIE ET AL 3,487,173

SMALL EXCHANGE STARED PROGRAM SWITCHING SYSTEM Dec. 30, 1969 Filed July 15, 1966 'L -E BUSY ToNE D I' l-H- DIAL TONE MATRIX R. W. DUTHIE ET AL SMALL EXCHANGE STARED PROGRAM SWITCHING SYSTEM 29 Sheets-Sheet 16 Dec. 30, 1969 R. w. DuTHn-z E'r AL 3,487,173

SMALL EXCHANGE STARED PROGRAM SWITCHING SYSTEM 29 Sheets-Sheet 1'7 Filed July 15, 1966 FIGI? Dec. 30, 1969 R. w. DuTHlE ETAL 3,487,173

SMALL EXCHANGE STARED PROGRAM SWITCHING SYSTEM 29 Sheets-Sheet 18 Filed July 15', 196e cPA -U CPA' cpa : MICROSEC.

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MILLISEC.

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FIG.8 FIGS FIG. `s FIG. 7

FIG.

FIG.2

FIG. 3

FIG. 22

FIG. ZI

FIG. 2O

Flaw' FIG.l 25

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FIG.. 23

FIG.II

FIG. 24

y Fume, H614 FIGJS Dec. 3o, 19e-9 R. w. DUTHIE ET AL 3,487,173

SMALL EXCHANGE STARED PROGRAM SWITCHING SYSTEM Filed July 15, 1966 29 Sheets-Sheet 19 FIG. 26

REGISTER 8 LINE SCAN FROM D400 TEISTw-PGM c 040| RO UTINES PLVM D402 STANDBY S scAN l ROUTINE D404 YES G. BFR. BLSY DUMMY YES STATUS INCREMENT IXR BY 2 MKR IDLE YEs SELE LI G R FRO M G0 T0 MKjR CHECK Dec. 30, 1969 Filed July 15, 1966 FIG. 26A

R. W. DUTHIE ET AL SMALL EXCHANGE STARED PROGRAM SWITCHING SYSTEM 29 Sheets-Sheet 2O PGM D442 s w RouT|NEs""/8 'gang j L YES 045e PLACE TEST No m A* Dwz l L f PLM Tfr INCREMENT LINE GR TEST BY loo No. uKR. PLACE m MKR YEs D464 NO E966 EGITIMATE LN TEST MK D469 sTATu s o 4 72 N0 READ MKR I Ron SEILSECT Lms cFs LINE oF GR ROUTNE [D477 TEST D489 sTATu lNcR-EMENT s LINE INo GO TO LINE CFS ROUTINE 

